Demi Moore has a wild night, romping in Miami Beach

Demi Moore had a rather wild night Wednesday in Miami, getting her party on in a little gray romper and black specs at a beachside barbecue also attended by Lenny Kravitz and Stacy Kiebler, to name a few.

In the mix as well: Moore's rumored new boy toy, art dealer Vito Schnabel, the 26-year-old son of artist and director Julian Schnabel.

Possibly fueled by the empty cans of Red Bull seen around her in numerous photographs, the 50-year-old Moore was grinding in her seat, dancing and posing for the camera, mugging happily with Kravitz and Kiebler but not getting snapped in the same frame with Schnabel.

"She is definitely more down to party than Vito," an eyewitness told E! News, saying the two are definitely a couple. According to that source, the two were publicly making out at the event.

The party at Miami's Soho Beach House was sponsored by Chanel for Art.sy, Huffington Post reported, calling out Will Ferrell, Stephen Dorff, Russell Simmons, Pharrell Williams, Naomi Campbell, Jeremy Piven and Adriana Lima among other faces in the crowd.

Schnabel is hosting his own party Thursday night as part of the Art Basel festival, which runs through Sunday night in Miami Beach.